*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
    font-family: -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
a{
    text-decoration: none;
}
li{
    list-style: none;
}
.header{
    width: 100%;
    height: 60px;
    line-height: 60px;
}
.sub-header{
    width: 100%;
    height: 320px;
    color: #fff;
    background-color: #0074d9;
}
.container{
    width: 900px;
    margin: 0 auto;
    height: 100%;
    position: relative;
}
.header .brand{
    float: left;
    margin-right: 1rem;
    font-size: 1.25rem;
    line-height: inherit;
    color:rgba(0,0,0,.9);
}
.header ul{
    float: right;
}
.header li{
    display: inline-block;
    width: 60px;
    text-align: center;
}
.header li a{
    color: #9692a9;
}
.sub-header h1{
    font-size: 4.5rem;
    font-weight: normal;
    padding-top: 65px;
}
.sub-header .version{
    font-size: 16px;
    opacity: .8;
    color: #fff;
    font-weight: 400;
    display: inline;
}
.sub-header p{
    margin-top: 20px;
    font-size: 1.2rem;
    font-weight: 400;
}
.detail{
    width: 500px;
    margin: 80px auto 0 auto;
}
.detail .btn{
    width: 200px;
    height: 60px;
    line-height: 60px;
    background-color: #0074d9;
    float: left;
    border-radius: 5px;
    color: #fff;
    text-align: center;
}
.detail .btn.left{
    margin-right: 100px;
}
.sub-header .img{
    position: absolute;
    width: 300px;
    top: 20px;
    height: 280px;
    right: 0;
    background-color: #fff;
    border-radius: 5px;
    padding: 10px;
}
.sub-header .img img{
    width: 100%;
    height: 100%;
}